Carcharhinus obscurus, Dusky shark : fisheries, gamefish

You can sponsor this page

Carcharhinus obscurus (Lesueur, 1818)

Dusky shark
Add your observation in Fish Watcher
Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Carcharhinus obscurus   AquaMaps   Data sources: GBIF OBIS
Upload your photos and videos
Pictures | Videos | Stamps, Coins Misc. | Google image
Image of Carcharhinus obscurus (Dusky shark)
Carcharhinus obscurus
Picture by Randall, J.E.

Classification / Names Κοινά ονόματα | Συνώνυμα | Catalog of Fishes(Γένος, Είδη) | ITIS | CoL | WoRMS | Cloffa

Ελασμοβράγχιοι (καρχαρίες και σαλάχια) (sharks and rays) > Carcharhiniformes (Ground sharks) > Carcharhinidae (Requiem sharks)
Etymology: Carcharhinus: karcharos (Gr.), sharp or jagged; rhinus, an ancient name for sharks, from rhine (Gr.), rasp, both words alluding to a shark's jagged, rasp-like skin. (See ETYFish);  obscurus: Latin for dark, probably referring to its darkish blue-gray body color. (See ETYFish).
More on author: Lesueur.

Environment: milieu / climate zone / depth range / distribution range Οικολογία

Θαλασσινό(ά); Υφάλμυρο Υφαλόφιλο(α); ωκεανόδρομο(ς) (Ref. 51243); εύρος βάθους 0 - 400 m (Ref. 244), usually 200 - 400 m. Subtropical; 45°N - 46°S, 120°W - 156°E (Ref. 55186)

Κατανομή Χώρες | Περιοχές FAO | Οικοσυστήματα | Παρουσίες | Point map | Εισαγωγές | Faunafri

Western Atlantic: southern Massachusetts to Florida (USA), Georges Bank, Bahamas, Cuba, northern Gulf of Mexico, Nicaragua, southern Brazil and Uruguay (Ref. 58839). Eastern Atlantic: Canary Islands, Cape Verde, Senegal, Sierra Leone. Some records from the Mediterranean and Madeira may be based on Carcharhinus galapagensis. Indo-West Pacific: Red Sea (Ref. 5485), Mozambique and South Africa to Japan, China, Viet Nam and Australia. Eastern Pacific: southern California, USA to Gulf of California and the Revillagigedo Island. Highly migratory species.

Length at first maturity / Μέγεθος / Βάρος / Age

Maturity: Lm 249.5, range 220 - 300 cm
Max length : 420 cm TL αρσενικό/απροσδιόριστο; (Ref. 5578); common length : 250 cm TL αρσενικό/απροσδιόριστο; (Ref. 26999); μεγ. δημοσιευμένο βάρος: 346.5 kg (Ref. 4699); μεγ. αναφερόμενη ηλικία: 40 έτη (Ref. 31395)

Short description Μορφολογία | Μορφομετρία

Ραχιαίες άκανθες (συνολικά): 0; Μαλακές ραχιαίες ακτίνες (συνολικά): 0; Εδρικές άκανθες 0; Μαλακές εδρικές ακτίνες: 0. A large shark with a broadly rounded snout, triangular saw-edged upper teeth, curved moderate-sized pectoral fins, and an interdorsal ridge (Ref. 5578). Blue-grey, lead-grey above, white below; tips of pectoral and pelvic fins, as well as lower lobe of caudal fin and dorsal fins often dusky in young, plain in adults (Ref. 9997).

Βιολογία     Γλωσσάρι (π.χ. epibenthic)

Found in coastal and offshore waters but not oceanic (Ref. 5578). Adults are commonly found at depths of 200-400 m, young in shallower waters (Ref. 5485). A seasonal migratory species over parts of its range (Ref. 6871). Common component of the catch of the shark longline fishery (Ref.58048). Feeds on bottom and pelagic bony fish, sharks, skates, rays, cephalopods, gastropods, crustaceans, sometimes mammalian carrion and inorganic objects (Ref. 5578). Viviparous (Ref. 50449); with litter size number from 3-14 (Ref. 27549). Large adults are potentially dangerous (Ref. 4716, 6871). Utilized fresh, dried-salted, frozen and smoked for human consumption; hides for leather; fins for sharks-fin soup; and liver oil extracted for vitamins (Ref. 244).

Life cycle and mating behavior Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες

Viviparous, with a yolk-sac placenta, litter size 3-14 pups (Ref. 244); 70-100 cm at birth (Ref. 6871). Gestation period of ~ 16 months (Ref.58048). Distinct pairing with embrace (Ref. 205).

Main reference Upload your references | Αναφορές | Συντονιστής : Compagno, Leonard J.V. | Συνεργάτες

Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)

IUCN Red List Status (Ref. 130435)

  Endangered (EN) (A2bd); Date assessed: 06 November 2018

CITES


Threat to humans

  Traumatogenic (Ref. 4690)





Human uses

αλιεία: Εμπορικό(ά); αλιεία αναψυχής: ναί

Περισσότερες πληροφορίες

Κοινά ονόματα
Συνώνυμα
Μεταβολισμός
Θηρευτές
Οικοτοξικολογία
Αναπαραγωγή
Γεννητική Ωρίμανση
Γεννοβολία
Συναθροίσεις γεννοβολίας
Γονιμότητα
Αβγά
Egg development
Age/Size
Αύξηση
Length-weight
Length-length
Length-frequencies
Μορφομετρία
Μορφολογία
Προνύμφες
Δυναμική προνυμφών
Στρατολόγηση
Αφθονία
BRUVS
Αναφορές
Υδατοκαλλιέργειες
Προφίλ υδατοκαλλιέργειας
Στελέχοι
Γενετική
Electrophoreses
Κληρονομικότητα
Ασθένειες
Μεταποίηση
Nutrients
Mass conversion
Συνεργάτες
Φωτογραφίες
Stamps, Coins Misc.
Ήχοι
Σιγκουατέρα
Ταχύτητα
Κολυμβητικός Τύπος
Επιφάνεια βραγχίων
Otoliths
Εγκέφαλοι
Όραση

Εργαλεία

Special reports

Download XML

Διαδικτυακές πηγές

Estimates based on models

Preferred temperature (Ref. 123201): 8.7 - 18.6, mean 12.6 °C (based on 736 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00759 (0.00428 - 0.01346), b=3.08 (2.93 - 3.23), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Τροφικό Επίπεδο (Ref. 69278):  4.3   ±0.2 se; based on diet studies.
Ελαστικότητα (Ref. 120179):  Πολύ χαμηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού > 14 έτη (rm=0.02; also Musick et al. 2000 (Ref. 36717)).
Prior r = 0.09, 95% CL = 0.06 - 0.13, Based on 1 stock assessment.
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (88 of 100).
Climate Vulnerability (Ref. 125649):  High vulnerability (62 of 100).
Price category (Ref. 80766):   Medium.
Nutrients (Ref. 124155):  Calcium = 2.25 [0.42, 12.59] mg/100g; Iron = 0.295 [0.071, 0.898] mg/100g; Protein = 23 [20, 25] %; Omega3 = 0.163 [0.056, 0.425] g/100g; Selenium = 21.7 [6.3, 69.9] μg/100g; VitaminA = 24.1 [6.3, 93.0] μg/100g; Zinc = 0.398 [0.189, 0.797] mg/100g (wet weight);